Dan's favourite bag is old and in need of repair. Can he do it himself? No, he can't. It's not one of his skills so he needs to have it fixed. He can't fix his bag himself, but he can explain the grammar needed to talk about arranging for someone else to do it.

Unfortunately not all English verbs follow the same pattern for their different forms. Don't worry though, there is a good tip to help you remember different irregular verbs. Tim explains more in this session's video